EFFECT OF NANOCRYSTALLINE AND TWIN BOUNDARIES ON CORROSION BEHAVIOR OF 316L STAINLESS STEEL USING SMAT

By means of surface mechanical attrition treatment ( SMAT), the groin size with a diameter of aboat 60hm formed at about 20μm depth and numerous mechanical twins at about 50μm depth from the treated surface were synthesized in 316L stainless steel because of the different distributions of strain and...

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Veröffentlicht in:Acta metallurgica sinica : English letters 2006-06, Vol.19 (3), p.183-189
Hauptverfasser: Lü, A.Q., Zhang, Y., Li, Y., Liu, G., Zang, Q.H., Liu, C.M.
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container_start_page 183
container_title Acta metallurgica sinica : English letters
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creator Lü, A.Q.
Zhang, Y.
Li, Y.
Liu, G.
Zang, Q.H.
Liu, C.M.
description By means of surface mechanical attrition treatment ( SMAT), the groin size with a diameter of aboat 60hm formed at about 20μm depth and numerous mechanical twins at about 50μm depth from the treated surface were synthesized in 316L stainless steel because of the different distributions of strain and strain rate along depth orientation. For instance the maximum strain rate reached 10^3-10^4s^-1 on the top surface. The relationship between the microsturcture and the corrosion property was studied in 0.05M H2SO4+ 0.25M Na2SO4 aqueous solution, and the results show an extreme improvement of corrosion resistance owing to the appearance of twin boundaries and the obvious reduction in corrosion resistance attributed to the presence of nanocrystaline boundaries.
doi_str_mv 10.1016/S1006-7191(06)60042-2
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subjects 316L stainless steel
corrosion property
nanocrystaline boundary
surface mechanical attrition treatment
twin boundary
不锈钢
孪晶间界
title EFFECT OF NANOCRYSTALLINE AND TWIN BOUNDARIES ON CORROSION BEHAVIOR OF 316L STAINLESS STEEL USING SMAT
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